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    • 3. 发明申请
    • ROOM TEMPERATURE VULCANISABLE SILICONE COMPOSITIONS
    • 房间温度可维护的硅酮组合物
    • WO2012166692A1
    • 2012-12-06
    • PCT/US2012/039794
    • 2012-05-29
    • DOW CORNING CORPORATIONALTUM, StephenSEITZ, Aaron, J.
    • ALTUM, StephenSEITZ, Aaron, J.
    • C08L83/04
    • C09D183/04C08G77/16C08G77/26C08K5/544C08L83/04
    • Room temperature vulcanisable (RTV) silicone compositions which are storage stable, have good freeze/thaw characteristics in the absence of polar solvents and which cure to a low modulus silicone elastomer and a process for making same. The composition contains (i) 100 parts by weight of a hydroxyl endblocked polydiorganosiloxane having a viscosity at 25°C, of from 5 to 100 Pa.s (ii) one or more fillers, optionally treated to be rendered hydrophobic, (iii) from 2.5 to 10 parts by weight of methylvinyldi(N-ethylacetamido)silane, (iv) from 1 to 6 parts by weight of an aminoxysilicon compound having from 1 to 100 silicon atoms per molecule and from 3 to 10 aminoxy groups per molecule. The composition no i.e. zero (0) parts of a polar solvent selected from, Ν,Ν-dimethylformamide (DMF), acetonitrile and N-n-butylacetamide and does not visibly partially crystallize when stored at a temperature of 5°C or less.
    • 储存稳定的室温硫化(RTV)硅酮组合物,在没有极性溶剂的情况下具有良好的冷冻/解冻特性,并且固化成低模量硅氧烷弹性体及其制备方法。 该组合物包含(i)100重量份的在25℃下粘度为5至100Pa.s的(ii)一种或多种任选处理成疏水性的填料的羟基封端的聚二有机硅氧烷,(iii) 2.5〜10重量份的甲基乙烯基二(N-乙基乙酰胺基)硅烷,(iv)1至6重量份的每分子具有1至100个硅原子和每分子3至10个氨基的氨基硅氧烷化合物。 组合物No,即0(0)份选自α,ω-二甲基甲酰胺(DMF),乙腈和N-正丁基乙酰胺的极性溶剂,并且在5℃或更低的温度下储存时不显着部分结晶。